code: def __init__(self):
      self.worker = Worker.remote()
      self.worker_state = ray.get(self.worker.checkpoint.remote())
  
file_path: ray/doc/source/ray-core/doc_code/actor_checkpointing.py
imports: import os
  import sys
  import ray
  import json
  import tempfile
  import shutil
label_desc: Use image node_id 1 to create a new Controller object  with example: obj = Controller()